(under subclass 213) Subject matter wherein the mechanical movement actuator includes (1) relatively movable toothed members, round, linear or irregular, which transmit motion by meshing of the teeth during travel of the members, and (2) friction gearing, in which the members lack teeth, and force is transmitted by pressing one moving surface against the other, including those having one endless flexible member or belt.
SEE OR SEARCH CLASS
74, Machine Element or Mechanism,
640+, for gearing, per se.
137, Fluid Handling,
446, for float arm actuated valves having an interposed gear. 475, Planetary Gear Transmission Systems or Components, for planetary gearing, per se.
